Your search found 5 records
1 Gunawardena, A.. 1991. Roles of provincial councils, divisional councils, gramodaya mandalas and the Central Government. Colombo, Sri Lanka: Irrigation Management Policy Support Activity (IMPSA) Secretariat. 16p. (IMPSA Staff Working Paper 4.4)
Local government ; Institutional constraints ; Agricultural policy ; Irrigation management / Sri Lanka
(Location: IWMI HQ Call no: P 2013 Record No: H08841)
2 Gunawardena, A.. 1991. Roles of provincial councils, divisional councils, gramodaya mandalas and the Central Government. Colombo, Sri Lanka: Irrigation Management Policy Support Activity (IMPSA) Secretariat. 16p. (IMPSA Staff Working Paper 4.4)
(Location: IWMI HQ Call no: P 2184 Record No: H010707)
Prepared as a paper to support IMPSA Policy Paper 4 - Modernizing the irrigated agriculture sector: Transformations at the macro-institutional level.
3 Nagabhatla, Nidhi; Finlayson, Max; Senaratna Sellamuttu, Sonali; Wickramasuriya, R.; Pattnaik, C.; Narendra Prasad, S.; Gunawardena, A.. 2007. Using geospatial tools to overcoming sustainability concerns for wetland ecosystem. Paper presented at the 28th Asian Conference on Remote Sensing, Kuala Lumpur, Malaysia, 12-16 November 2007. 8p.
Wetlands ; Ecosystems ; Analysis ; Remote sensing / Sri Lanka / India / Muthurajawela Marsh / Negombo Lagoon / Gujarat / Tamil Nadu / Lake Kolleru
(Location: IWMI HQ Call no: IWMI 333.91816 G744 NAG Record No: H040565)
http://www.a-a-r-s.org/acrs/proceeding/ACRS2007/Papers/TS17.2.pdf
https://vlibrary.iwmi.org/pdf/H040565.pdf
https://vlibrary.iwmi.org/pdf/H040565.pdf
(1.32 MB)
Wetlands are amongst the earth’s most productive ecosystem and directly and indirectly support millions of people by providing ecosystem services or benefits, many through maintenance of the hydrological system. Land use changes in developed and developing countries are resulting in gradual elimination of wetlands at global and regional scales. Moreover, anthropogenic pressure to convert wetlands for other land uses is reported to be increasing significantly from developing countries. The Convention on Wetlands is an international initiative that provides a framework for wetland inventory, assessment, monitoring and wise use worldwide. In support of the Convention a multi-scalar wetland inventory was developed by IWMI. At the global level, the distribution of Ramsar sites has been analysed, focusing on the role and impact of agriculture activities. At the regional scale, the role of geospatial data sets has been tested for identifying wetlands in India. In addition a multiple-scale site analysis, using earth observation data and GIS, is underway to detect trends in wetland use for a coastal lagoon-marsh wetland complex in Sri Lanka and for the inland fresh water Lake Kolleru, India. For the regional analysis, two different datasets viz., national wetland inventory data (from SACON-30m) and GIAM (Global Irrigated Area Map-500 m) were used. The preliminary analysis reflects 57 % overlap in wetland area for Gujarat and 10 % for Tamil Nadu. The geospatial change analyses (studied using IDRISI-Andes) in Sri Lanka reflect the loss of deep water lagoon(5%), littoral forest (2 %.) and marsh (1%) due to sedimentation, infilling, vegetation clearance and expansion in built up areas; hence identifying urban development, pollution and the population pressure as the primary ‘indicators of stress’. In Kolleru, the temporal spatial analysis addresses the balance in conservation measures and livelihood dynamics. We intend to integrate the biophysical and socio-economic parameters to explain the role of earth resource satellite data and geospatial tools for sustainable management of wetland systems.
4 Nagabhatla, Nidhi; Finlayson, Max; Senaratna Sellamuttu, Sonali; Gunawardena, A.. 2008. Application of geospatial tools to monitor change in a micro-tidal estuary for the purpose of management planning. Ceylon Journal of Science (Biological Sciences), 37(1):73-86.
Wetlands monitoring ; Mapping ; Models ; Estuaries ; Ecosystems ; Lagoons ; Mangroves / Sri Lanka / Negombo / Muthurajawela Marsh / Sedawatte
(Location: IWMI HQ Call no: IWMI 333.918 G744 NAG, PER Record No: H041544)
http://www.sljol.info/index.php/CJSBS/article/download/497/535
https://vlibrary.iwmi.org/pdf/H041544.pdf
https://vlibrary.iwmi.org/pdf/H041544.pdf
5 Gunawardena, J.; Muthuwatta, Lal; Fernando, M. J. J.; Rathnayake, S.; Rodrigo, T. M. A. S. K.; Gunawardena, A.. (Eds.) 2015. Proceedings of the First International Symposium on Environment Management and Planning, Battaramulla, Sri Lanka, 23-24 February 2015. Colombo, Sri Lanka: Central Environmental Authority (CEA). 55p.
Environmental management ; Forest plantations ; Drug plants ; Tea ; Rubber industry ; Agroforestry ; Biodiversity ; Wildlife ; Freshwater ; Water quality ; Groundwater pollution ; Water deficit ; Land use ; Paddy fields ; Constructed wetlands ; Carbon ; Meteorology ; Models ; Satellite surveys ; GIS ; Remote sensing ; Maps ; Soil salinity ; Erosion ; Sand ; Solar radiation ; Watersheds ; Aquifers ; River basins ; Tanks ; Energy generation ; Bioremediation ; Waste management ; Performance evaluation ; Toxic substances ; Pollutant load ; Noise pollution ; Denitrification ; Leachates ; Biofertilizers ; Aquatic insects ; Food production ; Fishing ; Farmers ; Vegetable growing ; Vermicomposting ; Health hazards ; Malaria ; Case studies ; Arid zones ; Coastal area ; Coral reefs / Sri Lanka / India / Tangalle / Vavuniya / Jaffna / Killinochchi / Mullaitivu / Mannar / Kalpitiya / Colombo / Kalutara / Matara / Weligama / Badulla / Upper Mahaweli Catchment / Paraviwella Reef / Vairavapuliyankulam Tank / Kelani River / Himalayan Region
(Location: IWMI HQ Call no: IWMI Record No: H046899)
(1.32 MB)
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